CN100437689C - Method for driving a plasma display panel - Google Patents

Method for driving a plasma display panel Download PDF

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Publication number
CN100437689C
CN100437689C CNB2004100897827A CN200410089782A CN100437689C CN 100437689 C CN100437689 C CN 100437689C CN B2004100897827 A CNB2004100897827 A CN B2004100897827A CN 200410089782 A CN200410089782 A CN 200410089782A CN 100437689 C CN100437689 C CN 100437689C
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China
Prior art keywords
erase signal
temperature
voltage
signal
unit
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CN1614669A (en
Inventor
崔埈荣
金东铉
李载瑛
李相国
朴正后
李昈骏
金重均
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LG Electronics Inc
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LG Electronics Inc
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/298—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels using surface discharge panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
    • G09G3/292—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for reset discharge, priming discharge or erase discharge occurring in a phase other than addressing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
    • G09G3/292—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for reset discharge, priming discharge or erase discharge occurring in a phase other than addressing
    • G09G3/2922—Details of erasing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
    • G09G3/294—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for lighting or sustain discharge
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation

Abstract

The present invention relates to a plasma display panel, and more particularly, to an apparatus and method for driving a plasma display panel. According to an embodiment of the present invention, the apparatus for driving the plasma display panel includes a temperature sensor that senses a temperature of the plasma display panel, an erase signal tilt control unit that controls a tilt of an erase signal for erasing charges within a cell of the plasma display panel depending on the sensed temperature, and a driving unit that supplies an initialization signal for initializing the cell, an address signal for selecting the cell and a sustain signal for generating a sustain discharge in the cell to the plasma display panel after the charges within the cell are erased using the erase signal. Accordingly, a stabilized discharge can be implemented in such a manner that an ambient temperature is sensed when the plasma display panel is driven, an erase signal is controlled according to the sensed ambient temperature, and the controlled erase signal is applied.

Description

Drive the method and the device of Plasmia indicating panel
This non-provisional application requires the right of priority of patented claim No.10-2003-0077655 under 35U.S.C.119 (a) submitted in Korea S on November 4th, 2003, and its whole contents is included in here fully and as a reference.
Technical field
The present invention relates to Plasmia indicating panel, and relate more particularly to a kind of be used to drive plasma display panel device and method.
Background technology
Plasmia indicating panel (hereinafter, being called " PDP ") is suitable for such as He+Xe, and the ultraviolet radiation fluorescent material that the inert mixed gas interdischarge interval of Ne+Xe or He+Ne+Xe produces comes display image.Along with recent technical progress, it is thin and big that this PDP can be made, and improved greatly picture quality can be provided.
Fig. 1 is the planimetric map that has schematically shown the arrangement of electrodes of existing 3 electrode A C surface-discharge type PDP.
With reference to figure 1, the discharge cell of existing 3 electrode A C surface-discharge type PDP comprise scan electrode Y1 to Yn, keep electrode Z, and and scan electrode Y1 to Yn with keep electrode Z address electrodes intersecting X1 to Xm.
The unit 1 that is used to show one of redness, green and blue visible light scan electrode Y1 to Yn, keep electrode Z and addressing electrode X1 forms to the point of crossing of Xm.Scan electrode Y1 is to Yn and keep electrode Z and form on last substrate (not shown).At last substrate upper strata piezodielectric layer (not shown) and MgO protective seam (not shown).Addressing electrode X1 forms on the subtegulum (not shown) to Xm.Form barrier rib on subtegulum, it is used to prevent that light and electricity between the unit that level is adjacent each other from crosstalking.On the surface of subtegulum and barrier rib, form with the fluorescent material that radiates visible light by excited by vacuum ultraviolet.Will be such as He+Xe, the mixed inert gas of Ne+Xe or He+Ne+Xe is infused in the discharge space that is provided with between substrate and the subtegulum.Fig. 2 shows the method for gray level of the image of the existing PDP that handles above-mentioned structure.
With reference to figure 2, come the time to drive this PDP with a frame, this frame is divided into several height field with different quantity of radiation, to realize the gray level of picture.Each son field is divided into reset cycle of being used for the whole screen of initialization, is used to select sweep trace and from the addressing period of the sweep trace selected cell selected and be used for realizing keeping the cycle of gray level according to discharge quantity.For example, if desired with 256 gray level display pictures, as shown in Figure 2, will be divided into eight son SF1 corresponding to 1/60 second frame period (16.67ms) to SF8.In addition, eight son SF1 each in the SF8 is subdivided into reset cycle, addressing period and keeps the cycle.At this moment, each son reset and addressing period is identical each, yet the quantity of keeping pulse of keeping the cycle and distributing to it in each son field with 2 nThe ratio of (n=0,1,2,3,4,5,6,7) increases.
Fig. 3 shows the PDP drive waveforms that offers a son field.
With reference to figure 3, the cycle of keeping that is divided into reset cycle of being used for the whole screens of initialization, is used for the addressing period of selected cell and is used to keep the discharge of selected unit is driven PDP.
In starting stage in the reset cycle, rising edge waveform Ramp-up is offered all scan electrode Y simultaneously.Simultaneously, 0 volt voltage is added to keeps electrode Z and addressing electrode X.Rising edge waveform Ramp-up make wherein seldom produce light dark discharge in the unit of whole screen scan electrode Y and addressing electrode X between and scan electrode Y and keeping between the electrode Z take place.Utilization writes dark discharge, and just the wall electric charge of (+) polarity is accumulated at addressing electrode X and keeping on the electrode Z, and the wall electric charge of bearing (-) polarity is accumulated on scan electrode Y.
After rising edge waveform Ramp-up, negative edge waveform Ramp-dn is offered all scan electrode Y simultaneously, and wherein this negative edge waveform Ramp-dn begins to drop to the given voltage level of ground voltage GND or negative polarity from the positive polarity voltage of the crest voltage that is lower than rising edge waveform Ramp-up.Simultaneously, will keep voltage (Vs) and be added to and keep electrode Z, and 0 volt voltage will be offered addressing electrode X.When applying negative edge waveform Ramp-dn, at scan electrode Y with keep between the electrode Z and wipe dark discharge.The unwanted unnecessary wall electric charge of address discharge is wiped by wiping dark discharge in the wall electric charge that under writing the dark discharge situation, produces.Variation in the distribution of reset cycle mesospore electric charge is as follows.Almost do not change in the wall electric charge on addressing electrode X, but wipe by wiping dark discharge by the wall electric charge that writes some negative (-) polarity that dark discharge forms on scan electrode Y.
In addressing period, scanning impulse Sp is offered scan electrode Y in proper order, and will offer addressing electrode X with scanning impulse Sp data in synchronization pulsed D p simultaneously.When the voltage difference between scanning impulse Sp and the data pulse Dp and the wall voltage that produces are added up, in the unit that data pulse Dp is provided, produce address discharge in the reset cycle.
In the cycle of keeping, will keep pulse sus and alternately be added to scan electrode Y and keep electrode Z.When the wall voltage in the unit with when keeping pulse sus and being added up, can just, show discharge whenever the scan electrode Y in the unit of being selected by address discharge being provided when keeping pulse sus and keeping to produce between the electrode Z and keep discharge.
Finish keep discharge after, voltage wherein is elevated to the slant waveform ramp-ers that wipes that keeps voltage Vs gradually offers and keep electrode Z, thereby wipe remaining wall electric charge in the unit of whole screen.
But, in this PDP, if drive PDP at high temperature or low temperature with whole white or near hololeucocratic gray level, then the problem of Cun Zaiing is, because wherein the cause generation unit of the jitter phenomenon of the expansion discharge time of addressing period closes phenomenon (hereinafter, be called " high temperature erroneous discharge "), thereby and in perpendicular line continuously generation wherein open the cut phenomenon (being called hereinafter, " low temperature erroneous discharge ") etc. that nonoptional unit produces focus or erroneous discharge.This is because the amount of the wall electric charge of accumulating on addressing electrode X and scan electrode Y in the reset cycle changes according to environment temperature.This erroneous discharge according to temperature variation is influenced by weather and geographical conditions, and therefore becomes the principal element of the competitive power that reduces PDP.
Summary of the invention
Therefore, the objective of the invention is to solve at least the problem and the shortcoming of background technology.
The purpose of this invention is to provide a kind of apparatus and method that drive Plasmia indicating panel, wherein when driving Plasmia indicating panel, produce stable discharge and irrelevant with variation of temperature.
According to the first embodiment of the present invention, a kind of device that is used to drive Plasmia indicating panel is provided, it comprises temperature sensor, the temperature of its induction plasma display panel; The erase signal tilt control unit, if the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, the benchmark that the inclination of this erase signal tilt control unit control erase signal is higher than in room temperature tilts, if and the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, the benchmark that the inclination of this erase signal tilt control unit control erase signal is lower than in room temperature tilts; And driver element, it is using erase signal to wipe in the demonstration redness, being provided for initialization after the electric charge in the unit of one of green and blue visible light shows red, the initializing signal of the unit of one of green and blue visible light, be used for selecting to show redness, the address signal of the unit of one of green and blue visible light is showing redness with being used for, produce in the unit of one of green and blue visible light and keep the signal of keeping that discharges into Plasmia indicating panel, wherein, the scope of room temperature is from 0 ℃ to 50 ℃, the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
According to the first embodiment of the present invention, a kind of method that drives Plasmia indicating panel is provided, comprise step: the temperature of induction plasma display panel; If the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, the benchmark that the inclination of control erase signal is higher than in room temperature tilts, if and the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, the benchmark that the inclination of control erase signal is lower than in room temperature tilts; And use erase signal showing redness, wipe electric charge in the unit of one of green and blue visible light, and being provided for initialization afterwards shows red, the initializing signal of the unit of one of green and blue visible light, be used for selecting to show redness, the address signal of the unit of one of green and blue visible light is showing redness with being used for, produce in the unit of one of green and blue visible light and keep the signal of keeping that discharges into Plasmia indicating panel, wherein, the scope of room temperature is from 0 ℃ to 50 ℃, the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
According to a second embodiment of the present invention, provide a kind of device that is used to drive Plasmia indicating panel, it comprises temperature sensor, the temperature of its induction plasma display panel; The erase signal voltage control unit, if the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, the voltage of this erase signal voltage control unit control erase signal is higher than keeps voltage of signals, if and the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, the voltage of this erase signal voltage control unit control erase signal is lower than keeps voltage of signals; And driver element, it is using erase signal to wipe in the demonstration redness, being provided for initialization after the electric charge in the unit of one of green and blue visible light shows red, the initializing signal of the unit of one of green and blue visible light, be used for selecting to show redness, the address signal of the unit of one of green and blue visible light is showing redness with being used for, produce in the unit of one of green and blue visible light and keep the signal of keeping that discharges into Plasmia indicating panel, wherein, the scope of room temperature is from 0 ℃ to 50 ℃, the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
According to a second embodiment of the present invention, provide a kind of method that drives Plasmia indicating panel, comprised step: the temperature of induction plasma display panel; If the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, the voltage of control erase signal is kept voltage of signals to being higher than, if and the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, the voltage of control erase signal is kept voltage of signals to being lower than; And using erase signal to wipe in the demonstration redness, being provided for initialization after the electric charge in the unit of one of green and blue visible light shows red, the initializing signal of the unit of one of green and blue visible light, be used for selecting to show redness, the address signal of the unit of one of green and blue visible light is showing redness with being used for, produce in the unit of one of green and blue visible light and keep the signal of keeping that discharges into Plasmia indicating panel, wherein, the scope of room temperature is from 0 ℃ to 50 ℃, the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
The apparatus and method that are used to drive Plasmia indicating panel according to the first and second aspects of the present invention can be with induced environment temperature when driving Plasmia indicating panel, realize stable discharge according to the mode of the erase signal of the environment temperature control erase signal of induction and application controls.
Description of drawings
To be described in detail with reference to the attached drawings the present invention, the element that wherein similar numeral is similar.
Fig. 1 has schematically shown the planimetric map of the arrangement of electrodes of existing 3 electrode A C surface-discharge type PDP.
Fig. 2 is the view that illustrates with the method for the gray level of the image of the existing PDP of interpretation process.
Fig. 3 shows the drive waveforms of the PDP that offers a son field.
Fig. 4 shows the configuration of device that is used to drive PDP according to the first embodiment of the present invention.
Fig. 5 shows the drive waveforms that is used to explain according to the method for the driving PDP of the first embodiment of the present invention.
Fig. 6 shows a discharging light waveform, and it illustrates and produce the time point that writes dark discharge when using the erase signal with constant inclination, and strength of discharge.
Fig. 7 shows the relation between the inclination of the erase signal that illustrates under the address discharge situation and discharging light waveform.
Fig. 8 shows therein with the variation in the wave spectrum of light when the environment temperature of PDP raises under the condition that is obliquely installed 6V/ μ s of erase signal.
Fig. 9 shows therein the variation with the colour temperature when the environment temperature of PDP raises under the condition that is obliquely installed 6V/ μ s of erase signal.
Figure 10 show therein with under the condition that is obliquely installed 6V/ μ s of erase signal according to the reset cycle write dark discharge in temperature that increases and the relation between the discharging light waveform.
Figure 11 shows a discharging light waveform, and it illustrates the variation in the address discharge when the inclination of erase signal changes.
Figure 12 shows the configuration of the device of driving PDP according to a second embodiment of the present invention.
Figure 13 shows the drive waveforms of the method for the driving PDP that is used to explain according to a second embodiment of the present invention.
Embodiment
In more detailed mode the preferred embodiments of the present invention are described below with reference to the accompanying drawings.
＜the first embodiment 〉
According to the first embodiment of the present invention, a kind of device that is used to drive Plasmia indicating panel is provided, it comprises temperature sensor, the temperature of its induction plasma display panel; Erase signal tilt control unit, its temperature according to induction are controlled at the inclination of the erase signal that is used to wipe electric charge in the unit of Plasmia indicating panel; And driver element, its use erase signal be provided for after wiping electric charge in the unit initialization unit initializing signal, be used for the address signal of selected cell and be used in the unit generation keeping the signal of keeping that discharges into Plasmia indicating panel.
The inclination of this erase signal tilt control unit control erase signal is to change in the scope between 0.1V/ μ s and 1800V/ μ s.
The inclination of this erase signal tilt control unit control erase signal is to change in the scope between 2V/ μ s and 20V/ μ s.
If the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, the benchmark that the inclination of this erase signal tilt control unit control erase signal is higher than in room temperature tilts.
If the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, the benchmark that is lower than in room temperature that tilts to of this erase signal tilt control unit control erase signal tilts.
According to the first embodiment of the present invention, a kind of method that drives Plasmia indicating panel is provided, comprise step: the temperature of induction plasma display panel; Be controlled at the inclination of the erase signal that is used to wipe electric charge in the unit of Plasmia indicating panel according to the temperature of induction; And use erase signal to wipe electric charge in the unit, and be provided for afterwards initialization unit initializing signal, be used for the address signal of selected cell and be used for producing and keep the signal of keeping that discharges into Plasmia indicating panel in the unit.
Change in the scope between 0.1V/ μ s and the 1800V/ μ s of being tilted in of this erase signal.
Change in the scope between 2V/ μ s and the 20V/ μ s of being tilted in of this erase signal.
The step of the inclination of control erase signal comprises: if the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, the benchmark that the inclination of this erase signal tilt control unit control erase signal is higher than in room temperature tilts.
The step of the inclination of control erase signal comprises: if the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, the benchmark that the inclination of this erase signal tilt control unit control erase signal is lower than in room temperature tilts.
The scope of room temperature is from 0 ℃ to 50 ℃, and the scope of high temperature is from 50 ℃ to 100 ℃.
Describe apparatus and method below with reference to the accompanying drawings in detail according to the driving PDP of the first embodiment of the present invention.
Fig. 4 shows the configuration of device that is used to drive PDP according to the first embodiment of the present invention.
With reference to figure 4, the device that is used to drive PDP according to the first embodiment of the present invention comprises: be used to provide data to the data-driven unit 122 of the addressing electrode X1 of this PDP to Xm, be used for the scan drive cell 123 of driven sweep electrode Y1 to Yn, be used to drive be common electrode keep electrode Z keep driver element 124, be used to respond to the temperature sensor 127 of the temperature of PDP, be used for control and be the tilt control unit 126 of erase signal of inclination of the erase signal VRamp-ers of slant waveform according to the temperature of PDP, be used for control data driver element 122, scan drive cell 123, keep the time schedule controller 121 of driver element 124 and erase signal tilt control unit 126, and be used to provide each driver element 122, the driving voltage generator 125 of 123 and 124 required driving voltages.
Provide through the reverse gamma-corrected by reverse gamma-corrected circuit and error diffusion circuit (not shown) and error diffusion is handled and be mapped to data of each son afterwards by a son mapping circuit to data-driven unit 122.This data-driven unit 122 is in response to from the timing control signal CTRX of time schedule controller 121 sampling and latch data, and provide data to addressing electrode X1 to Xm.
Under the control of time schedule controller 121, scan drive cell 123 offers scan electrode Y1 to Yn with rising edge waveform Ramp-up and negative edge waveform Ramp-down during the reset cycle.In addition, under the control of time schedule controller 121, (scanning impulse Sp Vy) offers scan electrode Y1 to Yn to scan drive cell 123 in proper order, and will keep pulse sus offer scan electrode Y1 in proper order to Yn during the cycle of keeping with scanning voltage during addressing period.And, therein when at least one height field, the last pulse sus that keeps being offered in the situation after producing discharge when keeping electrode Z, scan drive cell 123 is added to scan electrode Y1 to Yn with erase signal VRamp-ers, and wherein erase signal Vramp-ers is that it tilts by the slant waveform of erase signal tilt control unit 126 controls.
Under the control of time schedule controller 121, produce therein during the cycle and addressing period of negative edge waveform Ramp-down, keeping driver element 124 will keep the bias voltage of voltage (Vs) and offer and keep electrode Z, and during the cycle of keeping and scan drive cell 123 alternations, be added to and keep electrode Z will keep pulse sus.In addition, therein when will be last in one or more son keep pulse sus and offer scan electrode Y1 to Yn the time produce in the discharge situation afterwards, keep driver element 124 and erase signal Vramp-ers is offered keep electrode Z, wherein erase signal Vramp-ers is that it tilts by slant waveform of erase signal tilt control unit 126 controls.
On printed circuit board (PCB) (PCB), temperature sensor 127 is set, wherein printed circuit board (PCB) is folded to the rear side of PDP or is positioned near the optional equipment of PDP, and this temperature sensor 127 is used to respond to the environment temperature of PDP, and provides the electric signal of the temperature of indication induction to arrive erase signal tilt control unit 126.The driver element 122,123 and 124 of PDP all is installed on the PCB.
Erase signal tilt control unit 126 is in response to controlling the inclination that it is the erase signal Vramp-ers of slant waveform from the temperature sensor signal of temperature sensor 127 and the control signal CTRERS of time schedule controller 121.In other words, erase signal tilt control unit 126 be used for when the temperature of PDP when room temperature is elevated to high temperature, increase the inclination of erase signal Vramp-ers, and when the temperature of PDP when room temperature is reduced to low temperature, the inclination of minimizing erase signal Vramp-ers.At this moment, the scope of room temperature is from 0 ℃ to 50 ℃, and the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.In addition, consider to comprise the life characteristic of whole PDP of the voltage endurance of the switch that constitutes PDP, preferably, change in the scope between 0.1V/ μ s and the 1800V/ μ s of being tilted in of this erase signal tilt control unit 126 control erase signals, more preferably between 2V/ μ s and 20V/ μ s.
For this reason, erase signal tilt control unit 126 comprises on-off element, and it is used for selecting a plurality of resistance and a plurality of electric capacity to adjust the RC time constant according to temperature.If necessary, this erase signal tilt control unit 126 can comprise the thermometer of its resistance according to temperature change, and can be integrated in the temperature sensor 127.
This erase signal tilt control unit 126 can be built in scan drive cell 123 and keep in one of driver element 124.
Time schedule controller 121 receives vertical/horizontal synchronizing signal and clock signals, and produce be used for control drive unit 122,123 and 124 and erase signal tilt control unit 126 each work schedule and synchronous timing control signal CTRX, CTRY, CTRZ and CTRERS.Time schedule controller 121 also is applied to timing control signal CTRX, CTRY, CTRZ and CTRERS corresponding driving unit unit 122,123 and 124 and erase signal tilt control unit 126, thus control drive unit 122,123 and 124 and erase signal tilt control unit 126.Data controlling signal CTRX comprises the switch controlling signal of sampling clock, latch control signal that is used for sampled data and the on/off time that is used for control energy recovery circuit and driving switch element.Scan control signal CTRY comprises the switch controlling signal of the on/off time of the energy recovering circuit that is used for being controlled at scan drive cell 123 and driving switch element.Keep the switch controlling signal that control signal CTRZ comprises the on/off time that is used for being controlled at the energy recovering circuit of keeping driver element 124 and driving switch element.In addition, erase signal skewed control signal CTRERS is included in the control signal of the on-off element that comprises in the erase signal tilt control unit 126.
Driving voltage generator 125 produces and sets up voltage Vsetup, common scanning voltage Vscan-com, scanning voltage (Vy), is kept voltage (Vs), data voltage (Vd) etc.These driving voltages can change according to the composition of discharge gas or the structure of discharge cell.
Fig. 5 shows the drive waveforms that is used to explain according to the method for the driving PDP of the first embodiment of the present invention.
With reference to figure 5, in method, be divided into a plurality of sons during with a frame period, and each son have reset cycle, addressing period and keep the cycle according to the driving PDP of the first embodiment of the present invention.The inclination of keeping the erase signal of using after the discharge at least one height field changes according to environment temperature.In other words, the temperature of induction PDP, be controlled at the inclination of the erase signal that is used to wipe electric charge in the unit of PDP according to the temperature of induction, and after the electric charge in using the erase signal erase unit, will be used for initialization unit initializing signal, be used for the address signal of selected cell and be used for producing the signal of keeping of keeping discharge offering PDP in the unit.This will be discussed in more detail below.
At first, in the starting stage in the reset cycle, rising edge waveform Ramp-up is offered all scan electrode Y simultaneously.Simultaneously, 0 volt voltage is added to keeps electrode Z and addressing electrode X.Rising edge waveform Ramp-up make wherein seldom produce light dark discharge in the unit of whole screen scan electrode Y and addressing electrode X between and scan electrode Y and keeping between the electrode Z take place.Utilization writes dark discharge, and just the wall electric charge of (+) polarity is accumulated with keeping on the electrode Z at addressing electrode X, and the wall electric charge of negative (-) polarity is accumulated on scan electrode Y.This writes dark discharge according to the tilt variation that just was used for wiping in the erase signal of the residual charge of unit before the reset cycle.
Fig. 6 shows a discharging light waveform, and it illustrates when applying the erase signal with constant inclination, produces the time point and the strength of discharge thereof that write dark discharge.
In other words, the light wave shape that writes dark discharge by providing erase signal with constant inclination to represent is provided Fig. 6.At this moment, in the light wave shape of dark discharge, if it is very big to wipe the inclination of waveform VRamp-ers, then fast and strong generation write dark discharge.As a result, accumulate a large amount of wall electric charges at addressing electrode on the electrode with keeping.Opposite, if it is very little to wipe the inclination of waveform Vramp-ers, then slowly and faint generation write dark discharge.As a result, accumulate a small amount of wall electric charge at addressing electrode on the electrode with keeping.
After the rising edge waveform Ramp-up of reset cycle, Ramp-dn offers scan electrode Y simultaneously with the negative edge waveform, and wherein this negative edge waveform Ramp-dn begins to drop to the given voltage level of ground voltage GND or negative polarity from the positive polarity voltage of the crest voltage that is lower than rising edge waveform Ramp-up.Simultaneously, will keep voltage (Vs) and offer and keep electrode Z, and with 0[V] voltage offer addressing electrode X.When applying negative edge waveform Ramp-dn, at scan electrode Y with keep between the electrode Z and wipe dark discharge.In the wall electric charge that under writing the dark discharge situation, produces the unwanted unnecessary wall electric charge of address discharge is wiped by wiping dark discharge.Variation in the distribution of reset cycle mesospore electric charge is as follows: almost do not change in the wall electric charge on addressing electrode X, but wiped by wiping dark discharge by the wall electric charge that writes some negative (-) polarity that dark discharge forms on scan electrode Y.Opposite, in the situation of the wall electric charge on keeping electrode Z, though the wall electric charge of accumulation positive polarity in writing dark discharge, because the wall electric charge of the negative polarity of accumulating on scan electrode Y moves in the time of wiping dark discharge and keeps electrode Z, the wall electric charge of the as many negative polarity of reduction of the wall electric charge on accumulation and the scan electrode Y.Therefore, after wiping dark discharge, become negative polarity from positive polarity in the polarity of keeping the wall electric charge on the electrode Z.
In addressing period, scanning impulse Sp is offered scan electrode Y in proper order, and will offer addressing electrode X with scanning impulse Sp data in synchronization pulsed D p simultaneously.When the voltage difference between scanning impulse Sp and the data pulse Dp and the wall voltage that produces are added up, in the unit that data pulse Dp is provided, produce address discharge in the reset cycle.Can make and be formed on by address discharge in the selected unit when applying a certain amount of wall electric charge that discharge takes place when keeping voltage (Vs).During addressing period, will keep voltage (Vs) and be added to and keep electrode Z.This address discharge wherein writes dark discharge and changes when the inclination of erase signal changes as shown in Figure 7 according in the quantitative changeization that writes the initial wall electric charge that produces under the dark discharge situation.
Fig. 7 shows the relation between the inclination of the erase signal that illustrates under the address discharge situation and discharging light waveform.
In other words, Fig. 7 (a) and Fig. 7 (b) show the address discharge light wave shape of representing respectively when the inclination of erase signal is 18V/ μ s and 9V/ μ s (b), and Fig. 7 (c) and Fig. 7 (d) show the address discharge light wave shape of representing respectively when the inclination of erase signal is 6V/ μ s and 4.5V/ μ s (b).
From Fig. 7, when the inclination of erase signal is 18V/ μ s and 9V/ μ s, produce about 1 μ s address discharge as can be seen, and when the inclination of erase signal Ramp-ers is 6V/ μ s and 4.5V/ μ s, produce about 1.25 μ s address discharges.
In the cycle of keeping, will keep pulse sus and alternately be added to scan electrode Y and keep electrode Z.When in the wall voltage of unit with when keeping pulse sus and being added up, can be whenever applying when keeping pulse sus, the scan electrode Y in the unit of being selected by address discharge and keep to produce between the electrode Z and keep discharge just, shows discharge.
Finish keep discharge after, voltage wherein is elevated to the slant waveform VRamp-ers that wipes that keeps voltage Vs gradually to be offered and keeps electrode Z, thereby wipe remaining wall electric charge in the unit of whole screen, this wipes slant waveform VRamp-ers is the slant waveform of its voltage according to the variation of ambient temperature of PDP.When the temperature of PDP when room temperature is elevated to high temperature, the inclination of this erase signal increases, and when the temperature of PDP when room temperature is reduced to low temperature, the inclination of this erase signal reduces.Consider to comprise the life characteristic of whole PDP of the voltage endurance of the switch that constitutes PDP, it preferably is set is tilted in the scope between 0.1V/ μ s and the 1800V/ μ s and changes, more preferred, between 2V/ μ s and 20V/ μ s, change.At this moment, the scope of room temperature is from 0 ℃ to 50 ℃, and the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
This erase signal VRamp-ers is used for controlling as described above the dark discharge that writes of reset cycle, therefore the wall change in charge amount that forms in scan electrode and addressing electrode according to temperature compensation.
Fig. 8 to 10 shows the experiment value that is used to confirm the effect that the method according to the driving PDP of the first embodiment of the present invention obtains.
Fig. 8 shows therein under the condition that is obliquely installed 6V/ μ s with erase signal, the variation when the environment temperature of PDP raises in the wave spectrum of light.In other words, Fig. 8 (a) shows therein under the condition that is obliquely installed 6V/ μ s with erase signal, because when the environment temperature of PDP is elevated to the cause of 70 ℃ high temperature or the high temperature erroneous discharge when higher from room temperature, the peak value of light wavelength spectrum [nm] changes to 5209nm from 5384nm.Compensate change by this way, that is, tilt to 18V/ μ s, the peak value 5209nm of light wavelength spectrum [nm] is changed to 5306nm, shown in Fig. 8 (b) by what increase erase signal VRamp-ers according to the light wavelength spectrum [nm] of temperature.
Fig. 9 shows therein under the condition that is obliquely installed 6V/ μ s with erase signal, the color coordinate values of the variation of the colour temperature when the environment temperature of PDP raises.In other words, Fig. 9 (a) shows therein under the condition that is obliquely installed 6V/ μ s with erase signal, when the environment temperature of PDP is elevated to 70 ℃ high temperature or when higher from room temperature, because the minimizing of the weak green colour temperature of the light quantitative change of green cell.Tilt to 18V/ μ s by what increase erase signal VRamp-ers, the change of this colour temperature is returned to optimum colour temperature, shown in Fig. 9 (b).
Figure 10 shows therein under the condition that is obliquely installed 6V/ μ s with erase signal, according to the dark discharge that writes of reset cycle, in temperature that increases and the relation between the discharging light waveform.In other words, Figure 10 shows therein will be under the condition that is obliquely installed 6V/ μ s of the erase signal of 70 ℃ or higher high temperature, and the delayed management cycle writes dark discharge because the discharge jitter value increases.If under this hot environment, the inclination of wiping slant waveform VRamp-ers is increased to 18V/ μ s, then produce apace and write dark discharge (green).
Figure 11 shows a discharging light waveform, and it illustrates the variation in the address discharge when the inclination of erase signal changes.In other words, Figure 11 (a) show therein with erase signal be obliquely installed 6V/ μ s, and temperature is the address discharge that produces under the condition of room temperature.Figure 11 (b) shows when the inclination of wiping slant waveform VRamp-ers is 6V/ μ s, when the environment temperature of PDP is elevated to 70 ℃ or higher high temperature, because the increase of discharge jitter value is delayed address discharge.
Be increased to 18V/ μ s if in this hot environment, wipe the inclination of slant waveform VRamp-ers, then produce the address discharge of Figure 11 (c) fast.
Equally, in the method according to the driving PDP of the first embodiment of the present invention, the inclination of wiping slant waveform VRamp-ers changes according to temperature.Therefore, in any environment,, can stably carry out address discharge by preventing high temperature erroneous discharge or low temperature erroneous discharge though in high temperature or low temperature, use PDP.
＜the second embodiment 〉
According to a second embodiment of the present invention, provide a kind of device that is used to drive Plasmia indicating panel, it comprises temperature sensor, the temperature of its induction plasma display panel; Erase signal voltage control unit, its temperature according to induction are controlled at the voltage of the erase signal that is used to wipe electric charge in the unit of Plasmia indicating panel; And driver element, its use erase signal be provided for after wiping electric charge in the unit initialization unit initializing signal, be used for the address signal of selected cell and be used in the unit generation keeping the signal of keeping that discharges into Plasmia indicating panel.
This erase signal voltage control unit is elevated to voltage in the scope between 80V and 280V with the voltage of erase signal.
This erase signal voltage control unit is elevated to voltage in the scope between 155V and 205V with the voltage of erase signal.
If the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, then the voltage of this erase signal voltage control unit control erase signal is kept voltage of signals to being higher than.
If the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, then the voltage of this erase signal voltage control unit control erase signal is kept voltage of signals to being lower than.
According to a second embodiment of the present invention, provide a kind of method that drives Plasmia indicating panel, comprised step: the temperature of induction plasma display panel; Be controlled at the voltage of the erase signal that is used to wipe electric charge in the unit of Plasmia indicating panel according to the temperature of induction; And use erase signal be provided for after wiping electric charge in the unit initialization unit initializing signal, be used for the address signal of selected cell and be used in the unit generation keeping the signal of keeping that discharges into Plasmia indicating panel.
Control in the scope of voltage between 80V and 280V of this erase signal.
Control in the scope of voltage between 155V and 205V of this erase signal.
The step of the voltage of this control erase signal comprises if the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, then controls the voltage of erase signal and keeps voltage of signals to being higher than.
The step of the voltage of this control erase signal comprises if the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, then controls the voltage of erase signal and keeps voltage of signals to being lower than.
The scope of room temperature is from 0 ℃ to 50 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
Describe the apparatus and method of driving PDP according to a second embodiment of the present invention below with reference to the accompanying drawings in detail.
Figure 12 shows the structure of the device of driving PDP according to a second embodiment of the present invention.
With reference to Figure 12, the device of driving PDP according to a second embodiment of the present invention comprises: be used to provide data to the addressing electrode X1 of the PDP data-driven unit 132 to Xm, be used for the scan drive cell 133 of driven sweep electrode Y1 to Yn, be used to drive be public electrode keep electrode Z keep driver element 134, be used to respond to the temperature sensor 137 of the temperature of PDP, be used for controlling the erase signal voltage control unit 136 of voltage of the erase signal VRamp-ers that is slant waveform according to the temperature of PDP, be used for control drive unit 132,133, with 134 and the time schedule controller 131 of erase signal voltage control unit 136, and be used to provide each driver element 132, the driving voltage generator 135 of 133 and 134 required driving voltages.
Data-driven unit 132 is identical with data-driven unit 122 according to the PDP of the first embodiment of the present invention in fact.Therefore, the detailed description of data-driven unit 132 will be provided simply.
Under the control of time schedule controller 131, during the reset cycle, scan drive cell 133 offers scan electrode Y1 to Yn with rising edge waveform Ramp-up and negative edge waveform Ramp-down.In addition, under the control of time schedule controller 131, scan drive cell 133 offers scan electrode Y1 to Yn in proper order with scanning impulse Sp during addressing period, and will keep pulse sus offer scan electrode Y1 in proper order to Yn during the cycle of keeping.And, in at least one height field, produce last keeping after the pulse sus, this scan drive cell 133 is added to scan electrode Y1 to Yn with erase signal Vramp-ers2, and wherein erase signal Vramp-ers2 is the slant waveform of its voltage by 136 controls of erase signal voltage control unit.
Under the control of time schedule controller 131, produce therein during the cycle and addressing period of negative edge waveform Ramp-down, keeping driver element 134 will keep the bias voltage of voltage (Vs) and offer and keep electrode Z, and during the cycle of keeping and scan drive cell 133 alternations, be added to and keep electrode Z will keep pulse sus.In addition, in one or more sons field, produce last keeping after the pulse sus, keep driver element 134 and erase signal VRamp-ers2 is offered keep electrode Z, wherein erase signal VRamp-ers2 is the slant waveform of its voltage by 136 controls of erase signal voltage control unit.
On printed circuit board (PCB) (PCB), temperature sensor 137 is set, wherein printed circuit board (PCB) is folded to the rear side of PDP or is positioned near the optional equipment of PDP, and this temperature sensor 137 is used to respond to the environment temperature of PDP, and provides the electric signal of the temperature of indication induction to arrive erase signal voltage control unit 136.The driver element 132,133 and 134 of PDP is installed on the PCB.
Erase signal voltage control unit 136 is in response to the voltage from the control signal CTRERS2 control erase signal Vramp-ers2 of the temperature sensor signal of temperature sensor 137 and time schedule controller 131.In other words, erase signal voltage control unit 136 be used for when the temperature of PDP when room temperature is elevated to high temperature, the voltage of wiping inclined-plane signal Vramp-ers2 is provided, this voltage is elevated to and is higher than the voltage Vs+ Δ V that keeps voltage (Vs), and when the temperature of PDP when room temperature is reduced to low temperature, the voltage of wiping inclined-plane signal Vramp-ers2 is provided, and this voltage is reduced to and is lower than the voltage Vs-Δ V that keeps voltage (Vs).For this reason, erase signal voltage control unit 136 comprises and is used for selecting to keep voltage (Vs) according to the temperature of PDP, is higher than the voltage Vs+ Δ V that keeps voltage (Vs) and is lower than the given voltage source of one of voltage Vs-Δ V of keeping voltage (Vs).
At this moment, voltage source has the voltage of 80V to 280V, makes it mate the life characteristic of PDP.Preferably, this voltage source has the voltage of 155V to 205V.In above-mentioned, the scope of room temperature is from 0 ℃ to 50 ℃, and the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
Simultaneously, erase signal voltage control unit 136 can be built in scan drive cell 133 and keep in one of driver element 134.
Time schedule controller 131 receives vertical/horizontal synchronizing signal and clock signals, and produce be used for control drive unit 132,133 and 134 and erase signal voltage control unit 136 each work schedule and synchronous timing control signal CTRX, CTRY, CTRZ and CTRERS2.Time schedule controller 131 also is applied to timing control signal CTRX, CTRY, CTRZ and CTRERS2 corresponding driving unit unit 132,133 and 134 and erase signal voltage control unit 136, thus control drive unit 132,133 and 134 and erase signal voltage control unit 136.Data controlling signal CTRX comprises the switch controlling signal of sampling clock, latch control signal that is used for sampled data and the on/off time that is used for control energy recovery circuit and driving switch element.Scan control signal CTRY comprises the switch controlling signal of the on/off time of the energy recovering circuit that is used for being controlled at scan drive cell 133 and driving switch element.Keep the switch controlling signal that control signal CTRZ comprises the on/off time that is used for being controlled at the energy recovering circuit of keeping driver element 134 and driving switch element.In addition, control signal CTRERS2 is included in the control signal of the on-off element that comprises in the erase signal voltage control unit 136.
Driving voltage generator 135 produce set up voltage Vsetup, common scanning voltage Vscan-com, scanning voltage (Vy), keep voltage (Vs), data voltage (Vd), be higher than the voltage Vs+ Δ V that keeps voltage (Vs) and be lower than the voltage Vs-Δ V that keeps voltage (Vs) etc.These driving voltages can change according to the composition of discharge gas or the structure of discharge cell.
Figure 13 shows the drive waveforms of the method for the driving PDP that is used to explain according to a second embodiment of the present invention.
With reference to Figure 13, in the method for according to a second embodiment of the present invention driving PDP, be divided into a plurality of sons during with a frame period, and each son have reset cycle, addressing period and keep the cycle.After in depending on one or more son field of variation of ambient temperature, keeping discharge, apply the voltage of erase signal.In other words, the temperature of induction PDP, be controlled at the voltage of the erase signal that is used to wipe electric charge in the unit of PDP according to the temperature of induction, and after the electric charge in using the erase signal erase unit, will be used for initialization unit initializing signal, be used for the address signal of selected cell and be used for producing the signal of keeping of keeping discharge offering PDP in the unit.This will be discussed in more detail below.
At first, in the starting stage in the reset cycle, rising edge waveform Ramp-up is offered all scan electrode Y simultaneously.Simultaneously, with 0[V] voltage be added to and keep electrode Z and addressing electrode X.Rising edge waveform Ramp-up make wherein seldom produce light dark discharge in the unit of whole screen scan electrode Y and addressing electrode X between and scan electrode Y and keeping between the electrode Z take place.Utilization writes unglazed discharge, and just the wall electric charge of (+) polarity is accumulated with keeping on the electrode Z at addressing electrode X, and the wall electric charge of negative (-) polarity is accumulated on scan electrode Y.This writes the dark discharge basis was the change in voltage of the erase signal Vramp-ers2 of slant waveform before the reset cycle just.
After rising edge waveform Ramp-up, Ramp-dn offers scan electrode Y simultaneously with the negative edge waveform, and wherein this negative edge waveform Ramp-dn begins to drop to the given voltage level of ground voltage GND or negative polarity from the positive polarity voltage of the crest voltage that is lower than rising edge waveform Ramp-up.Simultaneously, will keep voltage (Vs) and be added to and keep electrode Z, and with 0[V] voltage offer addressing electrode X.When applying negative edge waveform Ramp-dn, at scan electrode Y with keep between the electrode Z and wipe dark discharge.In the wall electric charge that produces under writing the dark discharge situation the unwanted unnecessary wall electric charge of address discharge being wiped free of dark discharge wipes.To be described in the variation of the distribution of reset cycle mesospore electric charge below.Almost do not change in the wall electric charge on addressing electrode X, but wiped by wiping dark discharge by the wall electric charge that writes some negative (-) polarity that dark discharge forms on scan electrode Y.Opposite, in the situation of the wall electric charge on keeping electrode Z, though the wall electric charge of accumulation positive polarity in writing dark discharge, because move to when keeping electrode Z in the time of wiping dark discharge at the wall electric charge of the negative polarity of accumulating on the scan electrode Y, accumulated with scan electrode Y on the wall electric charge of the as many negative polarity of reduction of wall electric charge.Therefore, after wiping dark discharge, become negative polarity from positive polarity in the polarity of keeping electrode Z upper wall electric charge.
In addressing period, scanning impulse Sp is offered scan electrode Y in proper order, and will offer addressing electrode X with scanning impulse Sp data in synchronization pulsed D p simultaneously.When the voltage difference between scanning impulse Sp and the data pulse Dp and the wall voltage that produces are added up, in the unit that data pulse Dp is provided, produce address discharge in the reset cycle.Form in the unit by address discharge and to make the wall electric charge that the amount of discharging takes place when applying when keeping voltage (Vs).During addressing period, will keep voltage (Vs) and be added to and keep electrode Z.This address discharge wherein writes dark discharge and changes when the voltage of erase signal changes according to changing in the amount that writes the initial wall electric charge that produces under the dark discharge situation.
In the cycle of keeping, will keep pulse sus and alternately be added to scan electrode Y and keep electrode Z.When in the unit with when keeping wall voltage between the pulse sus and being added up, make that whenever applying when keeping pulse sus the scan electrode Y in the unit of being selected by address discharge and keep to produce between the electrode Z and keep discharge just, shows discharge.
Finish keep discharge after, the erase signal VRamp-ers2 that its voltage is changed according to the environment temperature of PDP offers and keeps electrode Z, thereby wipes remaining wall electric charge in the unit of whole screen.In other words, by the dark discharge that writes of control reset cycle, erase signal VRamp-ers2 is used for compensating according to temperature the amount of the wall electric charge on scan electrode and addressing electrode.The voltage of control erase signal has when room temperature is elevated to high temperature with the temperature as PDP and is higher than the voltage of keeping voltage, and is lower than the voltage of keeping voltage when the temperature of PDP has when room temperature is reduced to low temperature.At this moment, consider the life characteristic of panel, the voltage of control erase signal Vramp-ers2 to be to keep voltage (Vs) ± 100V, for example, changes between 80V and 280V when being 180V keeping voltage (Vs).Preferably, the voltage of control erase signal VRamp-ers2 to be to keep voltage (Vs) ± 25V, for example, changes between 155V and 205V when being 180V keeping voltage (Vs).Specifically, if the environment temperature of PDP is elevated to high temperature from room temperature, the voltage of erase signal VRamp-ers2 is increased to and is higher than the voltage of keeping voltage (Vs), for example, the voltage between 180V and 280V, thus the high temperature erroneous discharge prevented.Opposite, if the environment temperature of PDP is reduced to low temperature from room temperature, the voltage of erase signal VRamp-ers2 rises to below the voltage of keeping voltage (Vs), for example, the voltage between 80V and 180V, thus the low temperature erroneous discharge prevented.
In the mode identical with first embodiment, the scope of room temperature is from 0 ℃ to 50 ℃, and the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
As mentioned above, in the method for according to a second embodiment of the present invention driving PDP, the voltage of erase signal VRamp-ers2 changes according to temperature.Therefore, in any environment,, can come the stable address discharge that carries out by preventing high temperature erroneous discharge or low temperature erroneous discharge though in high temperature or low temperature, use PDP.
Describe the present invention like this, clearly can make multiple modification.This modification should not be considered to break away from the spirit and scope of the present invention, and all changes that it will be apparent to those skilled in the art that all are intended to be included among the scope of following claim.

Claims (12)

1. device that is used to drive Plasmia indicating panel, it comprises
Temperature sensor, the temperature of its induction plasma display panel;
The erase signal tilt control unit, if the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, the benchmark that the inclination of this erase signal tilt control unit control erase signal is higher than in room temperature tilts, if and the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, the benchmark that the inclination of this erase signal tilt control unit control erase signal is lower than in room temperature tilts; And
Driver element, after its electric charge in the unit that uses erase signal to wipe to show one of red, green and blue visible light, be provided for initializing signal that initialization shows the unit of one of red, green and blue visible light, be used for selecting showing one of redness, green and blue visible light the unit address signal and be used for producing and keep the signal of keeping that discharges into Plasmia indicating panel in the unit that shows one of red, green and blue visible light
Wherein, the scope of room temperature is from 0 ℃ to 50 ℃, and the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
2. device as claimed in claim 1, wherein, the inclination of this erase signal tilt control unit control erase signal is to change in the scope between 0.1V/ μ s and 1800V/ μ s.
3. device as claimed in claim 2, wherein, the inclination of this erase signal tilt control unit control erase signal is to change in the scope between 2V/ μ s and 20V/ μ s.
4. method that drives Plasmia indicating panel comprises step:
The temperature of induction plasma display panel;
If the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, the benchmark that the inclination of control erase signal is higher than in room temperature tilts, if and the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, the benchmark that the inclination of control erase signal is lower than in room temperature tilts;
The use erase signal is wiped the electric charge in the unit that shows one of redness, green and blue visible light; And
Be provided for initializing signal that initialization shows the unit of one of red, green and blue visible light, be used for selecting showing one of redness, green and blue visible light the unit address signal and be used for producing and keep the signal of keeping that discharges into Plasmia indicating panel in the unit that shows one of red, green and blue visible light
Wherein, the scope of room temperature is from 0 ℃ to 50 ℃, and the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
5. method as claimed in claim 4 wherein, changes in the scope between 0.1V/ μ s and the 1800V/ μ s of being tilted in of this erase signal.
6. method as claimed in claim 5 wherein, changes in the scope between 2V/ μ s and the 20V/ μ s of being tilted in of this erase signal.
7. device that is used to drive Plasmia indicating panel, it comprises:
Temperature sensor, the temperature of its induction plasma display panel;
The erase signal voltage control unit, if the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, the voltage of this erase signal voltage control unit control erase signal is higher than keeps voltage of signals, if and the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, the voltage of this erase signal voltage control unit control erase signal is lower than keeps voltage of signals; And
Driver element, after its electric charge in the unit that uses erase signal to wipe to show one of red, green and blue visible light, be provided for initializing signal that initialization shows the unit of one of red, green and blue visible light, be used for selecting showing one of redness, green and blue visible light the unit address signal and be used for producing and keep the signal of keeping that discharges into Plasmia indicating panel in the unit that shows one of red, green and blue visible light
Wherein, the scope of room temperature is from 0 ℃ to 50 ℃, and the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
8. device as claimed in claim 7, wherein, this erase signal voltage control unit is elevated to voltage in the scope between 80V and 280V with the voltage of erase signal.
9. device as claimed in claim 8, wherein, this erase signal voltage control unit is elevated to voltage in the scope between 155V and 205V with the voltage of erase signal.
10. method that drives Plasmia indicating panel comprises step:
The temperature of induction plasma display panel;
If the temperature of Plasmia indicating panel is elevated to high temperature from room temperature, the voltage of control erase signal is kept voltage of signals to being higher than, if and the temperature of Plasmia indicating panel is reduced to low temperature from room temperature, the voltage of control erase signal is kept voltage of signals to being lower than;
The use erase signal is wiped the electric charge in the unit that shows one of redness, green and blue visible light; And
Be provided for initializing signal that initialization shows the unit of one of red, green and blue visible light, be used for selecting showing one of redness, green and blue visible light the unit address signal and be used for producing and keep the signal of keeping that discharges into Plasmia indicating panel in the unit that shows one of red, green and blue visible light
Wherein, the scope of room temperature is from 0 ℃ to 50 ℃, and the scope of high temperature is from 50 ℃ to 100 ℃, and the scope of low temperature is from-20 ℃ to 0 ℃.
11. method as claimed in claim 10 wherein, is controlled in the scope of voltage between 80V and 280V of this erase signal.
12. method as claimed in claim 11 wherein, is controlled in the scope of voltage between 155V and 205V of this erase signal.
CNB2004100897827A 2003-11-04 2004-11-04 Method for driving a plasma display panel Expired - Fee Related CN100437689C (en)

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